def configIpv4Loopback(self, deviceGroupObj, **kwargs):
        """
        Description
            Configure an IPv4 loopback.

        Parameters
            deviceGroupObj: <str>: /api/v1/sessions/1/ixnetwork/topology{id}/deviceGroup/{id}
            kwargs: <dict>

        Example:
            protocolObj.configIpv4Loopback(deviceGroupObj,
                                           name='ipv4Loopback-1',
                                           multiplier=10,
                                           ipv4Address={'start': '1.1.1.1',
                                                        'direction': 'increment',
                                                        'step': '0.0.0.1'},
                                           prefix=32,
                                          )

        """
        createNewIpv4Obj = True
        response = self.ixnObj.post(self.ixnObj.httpHeader+deviceGroupObj+'/ipv4Loopback')
        ipv4LoopbackObj = response.json()['links'][0]['href']
        response = self.ixnObj.get(self.ixnObj.httpHeader+ipv4LoopbackObj)

        if 'name' in kwargs:
            self.ixnObj.patch(self.ixnObj.httpHeader+ipv4LoopbackObj, data={'name': kwargs['name']})

        if 'ipv4Address' in kwargs:
            multivalue = response.json()['address']
            self.ixnObj.logInfo('Configuring IPv4 address. Attribute for multivalueId = jsonResponse["address"]')

            # Default to counter
            multivalueType = 'counter'

            if 'ipv4AddressMultivalueType' in kwargs:
                multivalueType = kwargs['ipv4AddressMultivalueType']

            if multivalueType == 'random':
                self.ixnObj.patch(self.ixnObj.httpHeader+multivalue, data={'pattern': 'random'})
            else:
                self.configMultivalue(multivalue, multivalueType, data=kwargs['ipv4Address'])

        if 'multiplier' in kwargs:
            self.ixnObj.patch(self.ixnObj.httpHeader+ipv4LoopbackObj, data={'multiplier': kwargs['multiplier']})

        if 'prefix' in kwargs:
            multivalue = response.json()['prefix']
            self.configMultivalue(multivalue, 'singleValue', data={'value': kwargs['prefix']})

        if createNewIpv4Obj == True:
            self.configuredProtocols.append(ipv4LoopbackObj)